Three years after the fall of the Berlin Wall, the writer Christa Wolf was granted access to her newly declassified Stasi files. She was not surprised to discover forty-two volumes of documents produced by the East German secret police. But what was surprising was a thing green folder whos contents told an unfamiliar story: in the early 1960s, Wolf had been an informant for the Communist government. And yet, thirty years on, she had absolutely no recollection of it.